diff --git a/im-center-server/src/main/java/cn/axzo/im/controller/MessageController.java b/im-center-server/src/main/java/cn/axzo/im/controller/MessageController.java
index bdd7fb0..129f497 100644
--- a/im-center-server/src/main/java/cn/axzo/im/controller/MessageController.java
+++ b/im-center-server/src/main/java/cn/axzo/im/controller/MessageController.java
@@ -251,17 +251,6 @@ public class MessageController implements MessageApi {
         String sendImAccount = accountService.registerAccountIfAbsent(
                 sender.getPersonId(), sender.getOuId(), sender.getAppType());
         BizAssertions.assertNotNull(sendImAccount, "创建账号失败");
-        boolean syncSend = request.isTrySyncSend()
-                && CollectionUtils.isEmpty(request.receivePersonsOrEmpty())
-                && request.getImReceiveAccounts() != null
-                && request.getImReceiveAccounts().size() == 1;
-        MessageTask.BizData bizData = MessageTask.BizData.builder()
-                .messageBody(JSON.toJSONString(request.getMessageBody()))
-                .isSenderRobot(false)
-                .syncSend(syncSend)
-                .senderPersonId(request.determineSenderPersonId())
-                .nimMessageType(request.getMessageType())
-                .build();
         Date now = new Date();
         List<MessageTask.ReceivePerson> requestReceivePersons = JSONArray.parseArray(
                 JSONObject.toJSONString(request.receivePersonsOrEmpty()), MessageTask.ReceivePerson.class);
@@ -274,6 +263,15 @@ public class MessageController implements MessageApi {
                         .build());
             }
         }
+        int receiverSize = request.receivePersonsOrEmpty().size() + request.getImReceiveAccounts().size();
+        boolean syncSend = request.isTrySyncSend() && receiverSize == 1;
+        MessageTask.BizData bizData = MessageTask.BizData.builder()
+                .messageBody(JSON.toJSONString(request.getMessageBody()))
+                .isSenderRobot(false)
+                .syncSend(syncSend)
+                .senderPersonId(request.determineSenderPersonId())
+                .nimMessageType(request.getMessageType())
+                .build();
         Long taskId = transactionTemplate.execute(unused -> {
             MessageTask task = messageTaskService.create(MessageTask.builder()
                     .bizId(request.getBizId())